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luagen.enum.mustache Maven / Gradle / Ivy

{{#docstring}}
--[[
{{docstring}}
--]]
{{/docstring}}

-- Import this file with:
--   require '{{package}}.{{EnumName}}'

local {{EnumName}} = {
{{#values}}
  {{originalName}} = {{value}},
{{/values}}}

local inverseMapping = {}

local lookupById = function(enum_id)
  if not next(inverseMapping) then
    for label, id in pairs({{EnumName}}) do
      inverseMapping[tostring(id)] = label
    end
  end
  return inverseMapping[tostring(enum_id)]
end

setmetatable({{EnumName}}, {
  __index = function(_, arg)
    if type(arg) == "number" then
      return lookupById(arg)
    else
      return nil
    end
  end
})

return {{EnumName}}